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OLEGiveFeedback Event

  • Articolo

Occurs after every OLEDragOver event. Allows the drag source to specify the type of OLE drag-and-drop operation and the visual feedback.

PROCEDURE Object.OLEGiveFeedback
LPARAMETERS nEffect, eMouseCursor

Property Values

  • nEffect
    The action performed when data is dropped on the drop target. The value of nEffect is set by the drop target in its OLEDragOver event. The following table lists the values for nEffect with a description of each action.

    nEffect Foxpro.h constant Description
    0 DROPEFFECT_NONE Drop target cannot accept the data.
    1 DROPEFFECT_COPY Drop results in a copy.
    2 DROPEFFECT_MOVE Drop results in a move.
    4 DROPEFFECT_LINK Drop results in a link.

  • eMouseCursor
    Specifies the mouse pointer displayed during the OLE drag-and-drop operation. eMouseCursor can be a character or numeric value. eMouseCursor is an output parameter and is set to zero on entry into event.

    If eMouseCursor is a character value, it's assumed that the character value is the name of a graphics file of type .ani, .cur, or .ico. If eMouseCursor is a numeric value, the value specifies the mouse pointer displayed. The following table lists the numeric values for eMouseCursor with a description of each mouse pointer.

    eMouseCursor Foxpro.h constant Description
    0 MOUSE_DEFAULT Shape determined by the object. (Default)
    1 MOUSE_ARROW Arrow.
    2 MOUSE_CROSSHAIR Cross. A cross-hair pointer.
    3 MOUSE_IBEAM I-Beam.
    4 MOUSE_ICON_POINTER Icon. A small white square within a black square.
    5 MOUSE_SIZE_POINTER Size. A four-pointed arrow pointing north, south, east, west.
    6 MOUSE_SIZE_NE_SW Size NE SW. A double arrow pointing northeast and southwest.
    7 MOUSE_SIZE_N_S Size NS. A double arrow pointing north and south.
    8 MOUSE_SIZE_NW_SE Size NW SE. A double arrow pointing northwest and southeast.
    9 MOUSE_W_E Size WE. A double arrow pointing west and east.
    10 MOUSE_UP_ARROW Up Arrow.
    11 MOUSE_HOURGLASS Hourglass.
    12 MOUSE_NO_DROP No Drop.
    13 MOUSE_HIDE_POINTER Hide Pointer.
    14 MOUSE_ARROW2 Arrow.
    15 MOUSE_ARROW_HOURGLASS Arrow and hourglass.
    16 MOUSE_ARROW_QUESTION Arrow and question mark.

Remarks

OLEGiveFeedback is a drag source event that lets you provide visual feedback to the user. You can change the mouse cursor to indicate the operation that occurs when the mouse is positioned over the drag source or the drop target. Including NODEFAULT has no effect on the behavior of this method.

Note that you should avoid creating wait states in the OLEGiveFeedback event with commands and functions such as WAIT WINDOW and MESSAGEBOX( ).

See Also

OLE Drag-and-Drop Overview | OLEDragOver Event | NODEFAULT Command

Applies To: CheckBox | ComboBox | CommandButton | CommandGroup | Container Object | Control Object | EditBox | Form | Grid | Image | Label | Line | ListBox | OptionButton | OptionGroup | Page | PageFrame | ProjectHook Object | Shape | Spinner | TextBox | ToolBar